[#62] fixing script to sync notebooks to hydroshare

docs/examples/sync_notebooks_to_hydroshare.py

@@ -8,7 +8,7 @@
 for root, directories, files in os.walk("."):
     root = root[2:]
     file_paths = [os.path.join(root, f) for f in files if f[0] != "." and f.endswith(".ipynb")]
-    if not res.file(folder=root):
+    if root and not res.file(folder=root):
         res.folder_create(root)
     res.file_upload(*file_paths, destination_path=root)
     break